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The lineshape of the Lambda(1405) was studied in the pp -> pK+ Y0 reaction ata beam momentum of 3.65 GeV/c at COSY-Juelich. The ANKE spectrometer was usedto identify two protons, one positively charged kaon, and one negativelycharged pion in the final state. Invariant-mass and missing-mass techniqueswere applied to separate two neighbouring neutral excited hyperon resonances,the Sigma0(1385) and Lambda(1405). Both the shape and the position of theLambda(1405) distribution are similar to those measured in other reactions andthis information contributes to the ongoing debate regarding the structure ofthis resonance.

Studies of the Lambda(1405) in Proton-Proton Collisions with ANKE at COSY-Juelich